Boeing has elbowed its way into the hypersonic defense game, winning the second phase of the Glide Breaker program, an important advanced technology development contract that aims to provide a foundation for U.S. and Japanese efforts to jointly develop a hit-to-kill interceptor capable of chasing down and defeating ultra-fast maneuvering warheads. On Sept. 8, the Defense Advanced Research Projects Agency announced Boeing the winner of the Glide Breaker Phase 2 program -- moving forward a project launched in 2019 that...